EP2846678A1 - Vorrichtung zum abdecken eines freiliegenden endes eines durchtrennten sternums - Google Patents
Vorrichtung zum abdecken eines freiliegenden endes eines durchtrennten sternumsInfo
- Publication number
- EP2846678A1 EP2846678A1 EP13787219.8A EP13787219A EP2846678A1 EP 2846678 A1 EP2846678 A1 EP 2846678A1 EP 13787219 A EP13787219 A EP 13787219A EP 2846678 A1 EP2846678 A1 EP 2846678A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- exposed end
- strip
- sternum
- pliable
- pliable portions
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/0218—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors for minimally invasive surgery
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/0206—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors with antagonistic arms as supports for retractor elements
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8061—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates specially adapted for particular bones
- A61B17/8076—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates specially adapted for particular bones for the ribs or the sternum
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8085—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates with pliable or malleable elements or having a mesh-like structure, e.g. small strips
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00831—Material properties
- A61B2017/00946—Material properties malleable
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B2017/0212—Cushions or pads, without holding arms, as tissue retainers, e.g. for retracting viscera
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/0218—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors for minimally invasive surgery
- A61B2017/0225—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors for minimally invasive surgery flexible, e.g. fabrics, meshes, or membranes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B2017/0237—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors for heart surgery
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B2017/12004—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord for haemostasis, for prevention of bleeding
Definitions
- the present invention relates to cardiac surgery and, more particularly, to an apparatus for covering an exposed end of a severed sternum to stem bleeding therefrom.
- Blood in the pericardium and pleural cavity obstructs visibility during surgical procedures. This blood is either returned to the heart lung machine via a cardiotomy return sucker or collected with a cell-saver unit. However, blood which has come into contact with the pericardial or pleural surfaces and is returned to the circulation via a cardiotomy return sucker will elicit a detrimental inflammatory response to the patient. Blood returned to the circulation via the cell-saver circuit will result in loss of valuable clotting factors and platelets.
- Bone wax can be ineffective , and the introduction of a permanent foreign body into the sternal medullar is undesirable. In this regard, surgeons can be reluctant to place a permanent foreign body into the sternal medullar due to potential risk of increasing infection rate or making infection more difficult to treat if it occurs. There is also some evidence to suggest that bone wax inhibits osseous fusion and promotes infections.
- Topical haemostatic agents or absorbable haemostats can be difficult and cumbersome to apply, messy and ineffective in achieving sternal haemostasis.
- U.S. Patent Application No. 2008/0215054 discloses a U-shaped device comprising an end wall and opposed walls which surround the upper and lower surfaces of the sternum.
- the device is formed from a biocompatible plastic, hard elastomer or metal such as stainless steel, aluminium, titanium or other suitable metal. As the device is rigid, it is ineffective at forming a tight seal against the exposed sternal end of a patient whose cut sternum does not match the configuration of the device.
- Embodiments of the invention seek to solve, or at least ameliorate, one or more disadvantages of previous methods and apparatuses for stemming bleeding from an exposed end of a severed sternum.
- an apparatus for covering an exposed end of a severed sternum comprising a strip operative to cover the exposed end and manually pliable portions, which are able to be deformed over sides of the exposed end so as to retain the strip against the exposed end to stop or at least reduce flow of blood from the exposed end.
- the apparatus is generally planar and the pliable portions extend outwardly from the strip.
- the strip can have a substantially rigid longitudinally extending central portion from which the pliable portions extend.
- the pliable portions are in the form of a skirt.
- the pliable portions can be bent at any location along their length or across their extent so as to adapt to differently sized and/or shaped sternums.
- the apparatus further comprises a layer of haemostatic material which is arranged to be received against the exposed sternal end.
- the haemostatic material can be formed from an oxidised cellulose polymer.
- the apparatus can further comprise a compressible layer between the haemostatic material and the strip to promote apposition between the haemostatic material and the exposed sternal end..
- the substantially rigid portion is configured for transferring a force from a retractor to maintain separation of opposing ends of the severed sternum.
- the rigid portion distributes force from the retractor across the exposed end to reduce fracturing of the sternum.
- the apparatus further comprises an intermediate hinge to provide for longitudinal flexing of the apparatus.
- the hinge is disposed in a location generally corresponding to the manubriosternal joint of the sternum.
- the pliable portions are necked in about the hinge.
- the apparatus is constructed in layers.
- the strip is of unitary construction.
- the strip and pliable portions are formed as an integral unit.
- the integral unit is formed from aluminium sheet.
- the integral unit can be formed of a pliable mesh material.
- the pliable mesh is formed of a metallic material.
- the strip and the pliable portions which may or may not be integrally formed, are encapsulated in a polymer cover.
- the strip and the pliable portions may be encapsulated separately and joined once covered.
- the polymer is silicone.
- a method of reducing bleeding from an exposed end of a severed sternum comprising the steps of: providing an apparatus having a strip and pliable retaining elements, the strip being operative to cover the exposed end; placing the strip against the exposed end; and plastically deforming the retaining elements over sides of the exposed end to retain the strip against the exposed end to stop or at least reduce flow of blood from the exposed end.
- the method can further comprise the step of measuring the exposed end and selecting a pair of appropriately sized apparatuses from a selection of differently sized apparatuses.
- the selection includes 2 to 4 differently sized apparatuses.
- the exposed end is measured using a sterilised disposable ruler.
- the apparatus may be provided in the form of a strip which can be cut to length depending on the size of a patient's sternum.
- Figure 1 is a plan view of an apparatus for covering an exposed end of a severed sternum of one embodiment of the invention
- Figure 2 is a perspecti ve exploded view of the apparatus of Figure 1 ;
- Figure 3 is a sectional view of the apparatus of Figure 1, the apparatus being in a partially exploded state;
- Figure 4 is a plan view of an apparatus for covering an exposed end of a severed sternum of another embodiment of the invention.
- Figure 5 is a perspective exploded view of the apparatus of Figure 4;
- Figure 6 is a plan view of an apparatus for covering an exposed end of a severed sternum of another embodiment of the invention;
- Figure 7 is a perspective exploded view of the apparatus of Figure 6;
- Figure 8 is a plan view of an apparatus for covering an exposed end of a severed sternum of another embodiment of the invention.
- Figure 9 i s a perspecti ve exploded view of the apparatus of Figure 8.
- Figures 10A to 10E represent a sample of eight subjects having medium-sized stern urns
- Figures 1 1 A and 1 IB illustrate an apparatus suitable for an average medium-sized sternum
- Figure 12 is a perspective view illustrating the apparatus in use following a median sternotomy incision.
- Figure 13 is a view taken along line B-B shown in Figure 12.
- an embodiment means “one or more (but not all) embodiments of the disclosed invention(s)", unless expressly specified otherwise.
- a reference to “another embodiment” in describing an embodiment does not imply that the referenced embodiment is mutually exclusive with another embodiment (e.g., an embodiment described before the referenced embodiment), unless expressly specified otherwise.
- FIG. 1 there is shown an apparatus 10 according to a preferred embodiment of the present invention.
- the apparatus 10 is configured for covering an exposed end of a severed sternum of a patient.
- the apparatus 10 includes a strip 12 which is operative to cover the exposed end and pliable portions or sections 14 which are bendable or able to be deformed over sides of the exposed end so as to retain or clamp the strip 12 against the exposed end to stop or at least reduce flow of blood from the exposed end, thereby promoting haemostasis.
- the pliable portions 14 are flexible and plastically deformable so as to be formable to the contour of differently sized and/or shaped sternums.
- the pliable portions 14 are manually deformable, thereby aiding the rapid deployment of the apparatus by a surgeon or other medical personnel.
- the strip 12 and the pliable portions 14 may be integrally formed, as illustrated, or they may be formed as separate elements.
- the strip 12 is generally planar and is configured so that bringing it into contact with the exposed end of a severed sternum covers the exposed end to stop, or at least significantly reduce, bleeding from the exposed end.
- the pliable portions 14 extend outwardly from the strip 12 so that in a resting, unused state the apparatus 10 is generally flat so as to simplify packaging and storage.
- the pliable portions 14 act as retaining or clamping elements and extend from the strip 12 a predetermined amount which is sufficient to provide adequate retention force to act as jaws that lock onto the sternum to maintain the apparatus in position when fixed to a sternal half.
- the pliable portions 14 extend between 10 and 12 mm from the strip 12. The retaining force imparted onto the sternal half from the pliable portions once bent will be dependent on the properties of the material used for the strip and the desired amount of retaining or clamping force.
- the length of the pliable portions 14 will vary depending on the construction of the apparatus and its intended application, but it is envisaged that an apparatus having pliable portions 14 that extend between 5 and 20 mm from the strip 12 would be suitable in most circumstances.
- the sternums of different patients will be differently sized and shaped. In this regard, the length, width and curvature of respective sternums can vary significantly from one patient to the next.
- the pliable portions 14 can be bent at any location along their length or across their extent so as to adapt to differently sized and/or shaped sternums.
- a plurality of pliable portions 14 are provided around sides of the apparatus 10 so that the apparatus 10 can be more easily moulded to the particular shape of a patient's sternum. It will also be appreciated that suitable performance may be achieved with pliable portions that are continuous and are in the form of a skirt which extends around the periphery of the apparatus 10.
- the apparatus 10 has a substantially rigid, longitudinally extending central portion 16.
- a stiffener 18 is provided to impart the required rigidity to the central portion 16.
- the longitudinally extending central portion 16 may be integrally formed from a suitable material which imparts the desired rigidity.
- the substantially rigid portion 16 provides general longitudinal rigidity to the apparatus 10 and is configured for transferring a force from a surgical retractor which is used to maintain separation of opposing ends of the severed sternum.
- the substantially rigid portion 16 distributes force from the retractor across the exposed end to reduce fracturing of the sternum.
- rigid portion 16 should not be so stiff as to prevent any deformation of the sternum while under retraction, as failure to allow any deformation may lead to other problems such as brachial plexus injuries.
- Apparatus 10 further includes a covering 17, which in the described embodiment is formed of a medical grade silicone that encloses or encapsulates the strip 12 and the stiffener 18 to isolate them from the patient.
- a covering 17 provides the apparatus with a soft, smooth surface that can be easily handled and manipulated by the surgeon.
- the strip 12 is formed of aluminium and is 0.3 mm thick.
- the thickness of the material used for the strip 12 may be varied according to the properties of the selected material.
- the thickness, grade and type of material used may also be varied according to a desired rigidity of the strip 12 so that the pliable portions 14 are sufficiently flexible, bendable or able to be plastically deformed over sides of the exposed end so as to retain or clamp the strip 12 against the exposed end.
- the stiffener 18 is also formed of aluminium and is between 2.0 mm and 3.0 mm thick. It is envisaged that an aluminium stiffener that is 2.5 mm thick would be ideal, as would a stainless steel stiffener that is 2.0 mm thick, however, other materials may similarly be used.
- the covering 17 is formed using overmould techniques in which the strip 12 and the stiffener 18 are placed in an injection moulding tool and the covering is formed around them.
- - silicon is used due to its well accepted biocompatibility properties, though it will be appreciated that other polymers/plastic materials may similarly be used.
- the stiffener 18 may be fixed to the strip 12 before insertion into the injection moulding tool such as by gluing or using mechanical fixing methods. Alternatively, the strip 12 and the stiffener 18 may be clamped together in the injection moulding tool. Also, the strip may be of unitary construction and have a thicker central section which is much less pliable than thinner outer portions that can be easily bent around sides of the sternum.
- Figure 3 illustrates a partially exploded cross sectional view of apparatus 10 in which it can be seen that the strip 12 and the stiffener 18 are enclosed or encapsulated in the cover 17.
- the strip 12 and the stiffener 18 are shown to be encapsulated together, it will be appreciated that they may be separately covered and otherwise joined during assembly.
- the apparatus 10 is shown as being constructed in a certain order that could be modified, for example the stiffener 18 may be disposed below the strip 2 prior to covering 17 being applied.
- the apparatus 10 further comprises a compressible layer 22 between the haemostatic material 20 and the strip 12 to promote apposition between the haemostatic material 20 and the exposed sternal end.
- the compressible layer 22 may be in the form of an expandable foam material which will contour to the shape and size of the hemi- sternum.
- the compressible layer 22 is wrapped in a layer of haemostatic material 20 and fixed to the cover 17 to form an assembly, using adhesive for example.
- the haemostatic material 20 is arranged to be received against the exposed sternal end to promote physiological sternal haemostasis.
- the haemostatic material 20 can be formed from an oxidised cellulose polymer, such as Surgicel.
- the apparatus 10 further comprises an intermediate hinge 24 to provide for longitudinal flexing of the apparatus 10.
- the hinge 24 is disposed in a location generally corresponding to a manubriosternal joint of the sternum, and divides apparatus 10 into two portions, a longer lower portion corresponding to the body of the sternum, and a shorter upper portion corresponding to the manubrium.
- apparatus 10 has a curved appearance, with the lower portion of the apparatus being angled approximately 14° to the upper portion of apparatus 10. It is envisaged that an apparatus having an angle between 10° and 18° would be suitable for most patients' sternums.
- the sternum When a retractor is used to separate the ends of the sternum, the sternum can flex about the manubriosternal joint, thereby increasing the possibility of separation of the apparatus 10 from the sternum leading to bleeding around this area.
- the apparatus 10 can accommodate for movement of the sternum, thereby improving apposition between the haemostatic material 20 and/or compressible layer 22 and the exposed sternal end.
- the intermediate hinge 24 may be formed by incorporating areas of weakness into the apparatus 10 in the form of notches 15 formed in the strip 12.
- the pliable portions 14 and the stiffener 18 are both necked in at this point so as to weaken the apparatus 10 in an area proximal to the intermediate hinge 24 so that the apparatus 10 can be bent as required during use.
- the stiffener may also be formed with a transverse notch to allow for longitudinal flexing.
- the pliable portions 14 are necked in about the hinge to allow them to neatly deform without buckling, thereby improving retention of the apparatus 10 against the sternal end.
- the strip 12 is shown to be of unitary construction for convenience, though it will be appreciated that the strip 12 may be formed from a plurality of discrete elements joined together. Similarly, the strip 12 and the pliable portions 14 are illustrated as being an integral unit, though it will be appreciated that they may be formed of separate components fixed together.
- Apparatus 10 is shown as being generally planar. When a surgical retractor is used to separate the exposed ends, it has been observed that the sternum tends to twist, thereby possibly reducing the effectiveness of a planar apparatus. It is therefore envisaged that the apparatus 10 may not be formed completely flat, but formed with a bow or twist to accommodate deflection of the sternum under retraction. Alternatively, the apparatus 10 may be manufactured so as to retain a degree of flexibility which would allow the apparatus to address this sternal variation.
- FIG. 4 Another apparatus 1 10 according to another preferred embodiment of . the present invention is shown in Figures 4 and 5.
- the apparatus 1 10 is also configured for covering an exposed end of a severed sternum and is constructed similarly to apparatus 10 so that the preceding description applies to this embodiment via similarly numbered components each incremented by 100.
- the pliable portions 114 are differently configured so as to remove the end portions so that the apparatus 1 10 is only fixed to si des of the exposed end.
- FIGs 6 and 7 Another apparatus 210 according to another preferred embodiment of the present invention is shown in Figures 6 and 7.
- the apparatus 210 is also configured for covering an exposed end of a severed sternum and is constructed similarly to apparatuses 10, 1 10 so that the preceding description applies to this embodiment via similarly numbered components each incremented by 100.
- the rigid portion 216 of apparatus 210 is formed by forming a cavity in the strip 212 in which a stiffener 218 is received.
- a stiffener 218 is received.
- the pliable portions 214 form part of the strip 212 that is integrally stiffened so that the strip can be rigidly and securely fixed directly to the exposed end.
- the other similar configurations are possible and fall within the scope of the invention.
- the pliable portions 214 are shown as being part of the strip 212 it will be appreciated that other configurations in which the pliable portions are formed separately from the strip 212 are also possible.
- an example of such an arrangement is a plurality of pliable strips that can be deformed so as to form C-shaped clamps that are configured to fit over the strip 212 and engage the exposed end to retain the strip in position.
- the stiffener 218 may be otherwise fixed to the strip 212 such as by gluing or using mechanical fixing methods.
- the strip may be of unitary construction and have a thicker central section which is much less pliable than thinner outer portions that can be easily bent around sides of the sternum.
- the strip 212 is formed of stainless steel, the grade and thickness of which are selected so that the pliable outer portions 214 are sufficiently malleable and formable so that they can easily be bent or folded over sides of the exposed end.
- stainless steel may be a convenient material for use due to biocompatibility properties.
- other malleable metals such as copper or aluminium may similarly be used with appropriate treatment or surface coatings.
- FIG. 8 Another apparatus 310 according to another preferred embodiment of the present invention is shown in Figures 8 and 9.
- the apparatus 310 is also configured for covering an exposed end of a severed sternum and is constructed similarly to apparatuses 10, 1 10, 210 so that the preceding description applies to this embodiment via similarly numbered coraponents each incremented by 100.
- the pliable portions 314 are configured in a manner similar to pliable portions 1 14 of Figure 4. In this regard, the pliable portions 314 are configured so as to remove their end portions so that the apparatus 310 i s only fixed to sides of the exposed end.
- Each of apparatus 10, 1 10, 210, 310 is generally illustrated as being constructed in layers, though it will be appreciated that at least some of these layers may be combined to form an apparatus of unitary construction.
- the strip, the pliable portions and the rigid portion can be integrally formed. In one example, these parts are pressed, stamped or otherwise formed so that a member having a stiff central section and pliable outer portions is provided.
- the apparatus comprises a pliable mesh material suspended in a polymer matrix.
- the polymer is preferably a medical grade silicone and the pliable mesh is preferably formed of a metallic material, such as stainless steel.
- a stiffener may also be incorporated into the matrix to distribute the load of the retractor for the reasons discussed above.
- the apparatus 10, 1 10, 210, 310 would be manufactured in different sizes, or a single size that may be adjusted to suit various sized sternums.
- the applicant has found that it is possible to accommodate most sternum sizes with a range of 2 to 4 differently sized apparatuses which correspond to a predetermined size range of sternums.
- the apparatus may be provided in a Large size suitable for sternums in the range of 175 mm - 200 mm, a Medium size suitable for sternums in the range of 150 mm - 175 mm, a Small size suitable for sternums in the range of 125 mm - 150 mm, and a Extra-Small size suitable for sternums under 125 mm in length .
- the size of the pliable portions 14 may vary in accordance with the size of the apparatus.
- the Large apparatus may have pliable portions that extend between 10 and 20 mm from the strip, while the Extra-Small apparatus may have pliable portions that extend between 5 and 12 mm from the strip.
- Figures 10A to !OE represent a study of eight subjects having medium-sized sternums.
- the average height (h) of the apparatus required to cover the sternum, the angle ( ⁇ ) between the manubrium and lower sternum, length of the manubrium (d) and radius of curvature (r) of the lower sternum were assessed.
- Figure 10A is a side-view of a cut sternum displaying the relationship between these characteristics, as well as showing the manubrium 410, manubriostemal joint 412, and lower sternum 414. Each measured characteristic is shown plotted in Figures 10B to 10E.
- the apparatus may be provided in a Large size suitable for sternums in the range of 150 mm - 200 mm, and a Small size suitable for sternums in the range of 100 mm - 150 mm.
- the apparatus may be provided in a single size which may be adjusted to suit various sized sternums.
- the apparatus may be provided in the form of a strip which can be cut to length depending on the size of a patient's sternum.
- the apparatus may be provided as a pair, one piece for each of the opposing ends of a severed sternum.
- a disposable ruler may be provided separately for measuring the exposed end to determine the size of the apparatus required for a particular patient. It is envisaged that a surgeon would use the ruler to measure the size of the exposed end and, based on the size of the end, either cut the apparatus to the appropriate size or select an appropriately sized apparatus for use.
- Figure 12 is a perspective view illustrating the apparatus in use following a median sternotomy incision. Once a vertical incision is made along the sternum, and the sternum has been divided, an apparatus 10, having a strip 12 which is operative to cover an exposed end of the sternum is inserted at the site of the incision.
- Retractor 510 generally includes a pair of opposing arms 515 and 516 adapted to engage opposite sides of a sternal incision, and a drive mechanism constructed to force the arms, and thus the sternum apart. Using the drive mechanism, the sternum may be spread to the desired opening, thus providing surgical access to the thoracic cavity.
- an exposed end of the hemi-sternum faces the exposed end of the other hemi-sternum, which is directed medially.
- the exposed ends of the hemi-sternum that are cranial or caudal to the retractor blades 521 and 522 rotate to a degree so that the cut surfaces in these areas of the hemi-sternum face antero-medially (towards the ceiling with the patient lying supine) whilst the cut surface of the hemi-sternum between retractor blades 521 and 522 substantially faces the exposed end of the other hemi-sternum, which is directly medially.
- apparatus 10 sits between the exposed end 610 of the sternum and retractor blade 522, and is able to deform in the same manner as the exposed end of the sternum, both longitudinally and latitudinally. Apparatus 10 effectively covers the exposed surfaces of the sternal cortex 620 and sternal medulla 621.
- Pectoralis major muscle 622, adipose tissue 623, and dermis 624 are positioned more laterally after sternotomy and are usually not covered by apparatus 10. In some situations apparatus 10 may cover some of pectoralis major muscle 622 and adipose tissue 623.
- apparatus 10 may cover some of pectoralis major muscle 622 and adipose tissue 623.
- the method can include the step of measuring the exposed end and selecting an appropriately sized apparatus from a selection of differently sized apparatuses.
- the selection of differently sized apparatuses may include 2 to 4 differently sized apparatuses corresponding to common size ranges of sternums.
- the exposed end can be measured using a disposable ruler, or other similar measuring apparatus such as a stencil.
- the apparatus may be formed from a plurality of discrete elements. Such a construction would allow those elements which were in contact with a patient to be discarded, and be replaced with that either new elements or sterilised re-usable elements.
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Molecular Biology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Engineering & Computer Science (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Neurology (AREA)
- Surgical Instruments (AREA)
- Prostheses (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2012901880A AU2012901880A0 (en) | 2012-05-08 | Covering an exposed end of a severed sternum | |
PCT/AU2013/000469 WO2013166547A1 (en) | 2012-05-08 | 2013-05-07 | Apparatus for covering an exposed end of a severed sternum |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2846678A1 true EP2846678A1 (de) | 2015-03-18 |
EP2846678A4 EP2846678A4 (de) | 2016-01-20 |
EP2846678B1 EP2846678B1 (de) | 2019-07-31 |
Family
ID=49549987
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13787219.8A Active EP2846678B1 (de) | 2012-05-08 | 2013-05-07 | Vorrichtung zum abdecken eines freiliegenden endes eines durchtrennten sternums |
Country Status (7)
Country | Link |
---|---|
US (2) | US10285681B2 (de) |
EP (1) | EP2846678B1 (de) |
JP (1) | JP6503290B2 (de) |
CN (1) | CN104271029B (de) |
AU (2) | AU2013258869A1 (de) |
ES (1) | ES2742808T3 (de) |
WO (1) | WO2013166547A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011117413A1 (de) * | 2011-11-02 | 2013-05-02 | Aesculap Ag | Atraumatische Sternumsplatte |
EP2846678B1 (de) | 2012-05-08 | 2019-07-31 | Protego Medical Pty Limited | Vorrichtung zum abdecken eines freiliegenden endes eines durchtrennten sternums |
WO2013188274A2 (en) * | 2012-06-14 | 2013-12-19 | Novartis Ag | Azetidinium-containing copolymers and uses thereof |
US9861724B2 (en) * | 2013-08-06 | 2018-01-09 | Fusion Innovations, Llc | Method for fusion of fractured or voided sternum post sternotomy |
KR101654272B1 (ko) * | 2014-11-07 | 2016-09-05 | 서울대학교산학협력단 | 수술용 보호용구 |
US10213194B2 (en) * | 2016-09-27 | 2019-02-26 | Ethicon, Inc. | Surgical retraction systems including sternal retractors and hemostatic inserts |
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US3882855A (en) * | 1973-11-12 | 1975-05-13 | Heyer Schulte Corp | Retractor for soft tissue for example brain tissue |
JPS577509U (de) | 1980-06-16 | 1982-01-14 | ||
US5080088A (en) | 1987-11-09 | 1992-01-14 | Minnesota Scientific, Inc. | Flexible retractor |
US4889107A (en) * | 1988-02-10 | 1989-12-26 | Kaufman Jack W | Surgical retractor |
US5474094A (en) * | 1994-08-04 | 1995-12-12 | Ellenberg, Iii; William B. | Cut rib protector |
CA2232795A1 (en) * | 1998-05-22 | 1999-11-22 | Coroneo Inc. | Manipulation and adjustment of surgical instruments |
WO2000027327A1 (en) * | 1998-11-12 | 2000-05-18 | Polymer Biosciences, Inc. | Hemostatic polymer useful for rapid blood coagulation and hemostasis |
US7226467B2 (en) * | 1999-04-09 | 2007-06-05 | Evalve, Inc. | Fixation device delivery catheter, systems and methods of use |
US6312377B1 (en) * | 2000-04-06 | 2001-11-06 | Viamedics, Llc | Soft tissue compression shield and method of retracting tissue |
WO2004084707A2 (en) * | 2003-03-20 | 2004-10-07 | Leslie Lidonnici | Methods and devices for minimizing the loss of blood through a severed sternum during cardiac and/or thoracic surgery |
US7008392B2 (en) * | 2003-06-27 | 2006-03-07 | Johnson & Johnson Consumer Companies, Inc. | Hemostatic cleansing swab |
US7294103B2 (en) * | 2003-11-12 | 2007-11-13 | Endoscopic Technologies, Inc. | Retractor with inflatable blades |
US20060084843A1 (en) * | 2004-09-30 | 2006-04-20 | Codman & Shurtleff, Inc. | Disposable padding for a self-retaining retraction device |
US20070075023A1 (en) * | 2005-08-10 | 2007-04-05 | Donald Wallace | Apparatus and method for a splint |
EP2077766A2 (de) * | 2006-09-08 | 2009-07-15 | EZ Surgical Ltd. | Formbares polster |
US20080215054A1 (en) * | 2007-01-26 | 2008-09-04 | Genesee Biomedical, Inc. | Devices and Methods for Minimizing the Hemorrhage from and Minimizing Infection of a Divided Sternum During Cardiac Surgery |
JP2009261811A (ja) | 2008-04-29 | 2009-11-12 | Hiroshima Univ | 開胸器補助具及び開胸器 |
US8915845B2 (en) * | 2008-05-14 | 2014-12-23 | Physcient, Inc. | Methods and devices to decrease tissue trauma during surgery |
US20100292540A1 (en) * | 2009-05-12 | 2010-11-18 | Hess Christopher J | Surgical retractor and method |
US8668697B2 (en) * | 2009-10-07 | 2014-03-11 | Abyrx, Inc. | Methods and devices for sternal closure |
CN201591583U (zh) * | 2009-12-02 | 2010-09-29 | 吕红权 | 一种手术切口牵开器 |
US20120088961A1 (en) * | 2010-10-12 | 2012-04-12 | Deasey Anthony P | Bowel packing device having a support structure |
CN202161362U (zh) * | 2011-04-11 | 2012-03-14 | 顾承雄 | 胸骨正中切口缝合保护装置 |
DE102011117413A1 (de) * | 2011-11-02 | 2013-05-02 | Aesculap Ag | Atraumatische Sternumsplatte |
EP2825100B1 (de) * | 2012-03-12 | 2019-05-15 | Emory University | Vorrichtung zum offenhalten des brustkorbes |
EP2846678B1 (de) | 2012-05-08 | 2019-07-31 | Protego Medical Pty Limited | Vorrichtung zum abdecken eines freiliegenden endes eines durchtrennten sternums |
CN103040559B (zh) * | 2012-12-21 | 2014-10-08 | 薛磊 | 一种便捷的胸腔封闭装置 |
-
2013
- 2013-05-07 EP EP13787219.8A patent/EP2846678B1/de active Active
- 2013-05-07 CN CN201380023618.3A patent/CN104271029B/zh active Active
- 2013-05-07 WO PCT/AU2013/000469 patent/WO2013166547A1/en active Application Filing
- 2013-05-07 AU AU2013258869A patent/AU2013258869A1/en not_active Abandoned
- 2013-05-07 ES ES13787219T patent/ES2742808T3/es active Active
- 2013-05-07 US US14/399,875 patent/US10285681B2/en active Active
- 2013-05-07 JP JP2015510574A patent/JP6503290B2/ja active Active
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2017
- 2017-09-28 AU AU2017235977A patent/AU2017235977B2/en not_active Ceased
-
2019
- 2019-04-18 US US16/388,626 patent/US11253244B2/en active Active
Also Published As
Publication number | Publication date |
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AU2017235977B2 (en) | 2019-07-11 |
AU2013258869A1 (en) | 2015-01-15 |
US10285681B2 (en) | 2019-05-14 |
JP6503290B2 (ja) | 2019-04-17 |
AU2017235977A1 (en) | 2017-10-19 |
US20150148614A1 (en) | 2015-05-28 |
CN104271029B (zh) | 2017-07-18 |
US20190239869A1 (en) | 2019-08-08 |
ES2742808T3 (es) | 2020-02-17 |
EP2846678B1 (de) | 2019-07-31 |
WO2013166547A1 (en) | 2013-11-14 |
JP2015517331A (ja) | 2015-06-22 |
US11253244B2 (en) | 2022-02-22 |
CN104271029A (zh) | 2015-01-07 |
EP2846678A4 (de) | 2016-01-20 |
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